Standing umbrella

ABSTRACT

A standing umbrella has a mast on which the inner end of an outwardly and inwardly movable carrier beam is guided with the outer end of the beam carrying an umbrella stick of a collapsible umbrella and with the carrier beam being held by a connecting strut linkedly arranged between the upper end of the mast the carrier beam. A drive mechanism shifts the inner end of the carrier beam along the length of the mast and the mast has two guide tracks spaced from one another and so profiled that guide elements running there along and carried by the inner end of the mast are held by the shape of the tracks against movement transversely to the direction in which the inner end of the carrier beam is shifted; and the drive mechanism for shifting the inner end of the carrier beam and a drive mechanism for opening and closing the umbrella are so combined with one another that they operate simultaneously in common.

FIELD OF THE INVENTION

The invention concerns a standing umbrella with a stand having a mast onwhich the inner end of an outwardly and inwardly movable carrier beam isguided, the beam carrying the umbrella stick of a collapsible umbrellaat its outer end and being held by means of a connecting strut linkedlyarranged between the carrier beam and the upper end of the mast, and adrive mechanism for shifting the inner end of the carrier beam as wellas for opening and closing the umbrella.

BACKGROUND OF THE INVENTION

A standing umbrella of the above-mentioned type is, for example, knownfrom EP-PS 0 387 965. In the standing umbrella of that patent, the innerend of an outwardly and inwardly movable carrier beam is guided in theinterior of the mast through an elongated slot and is connected with adrive mechanism consisting of a circulating member driven by means of ahand crank drive. A tension member, for example a cable, which at itsinner end facing the mast is rigidly connected with the mast, serves toopen the umbrella. From the mast, the tension element runs to andthrough the hollow carrier beam to the outer end of the beam, where thetension element is bent toward an upper hollow umbrella stick. Thetension member is at its outer end connected with a further lowerumbrella stick to the lower end of which support struts are pivotallyconnected, which struts in turn are pivotally connected with roof rods,which rods are pivotally connected to a crown located in the upper areaof the upper umbrella stick. Upon outward extension of the carrier beamby sliding upwardly its inner end, the tension member is automaticallydrawn rearwardly relative to the mast whereby the lower umbrella stickportion is moved telescopically into the upper umbrella stick portionand the umbrella is opened. The lower umbrella stick portion thenarrives at a pivotal connection between the upper umbrella stick and thecarrier beam in the region above the crown, and locks this pivotalconnection.

In this standing umbrella, there exists the disadvantage that the mastis weakened by the elongated guide slot, so that its bending andtorsional rigidities are reduced, so that on one hand there exists thedanger of a breakage of the mast and on the other hand, the danger ofcontortion when loaded by winds. Moreover, the tension member foropening and closing the umbrella lies freely accessible on the outsideof the mast so that it is exposed to the danger of damage. Also, aninclined positioning of the umbrella by adjustment of the carrier beamis not possible since for opening of the umbrella the carrier beam mustalways be fully extended.

SUMMARY OF THE INVENTION

The object of the invention is to further improve a standing umbrella ofthe above-mentioned kind.

The object of the invention is solved by having the mast of the standingumbrella include two guide tracks spaced from one another by a spacingand so profiled that the guide elements which move along said tracks areheld against movement perpendicularly to the sliding direction. By thetwo spaced and profiled guide tracks for the guide elements on the innerend of the carrier beam, the transverse sturdiness of the carrier beamrelative to the mast is improved so that the carrier beam and with itthe standing umbrella are made more resistant to wind loads.

The invention also resides in the carrier beam drive mechanism forshifting the inner end of the carrier beam and the drive mechanism foropening and closing the umbrella, being so combined with one anotherthat they are simultaneously operable in common, which results in animproved and reliable drive of the standing umbrella, and which alsopermits various different development possibilities.

The invention also resides in other features of the standing umbrella asclearly set forth in the claims.

The mast can consist of a solid profile, however, a preferred profile isthat of a closed hollow cross section. The closed hollow cross sectionprovides not only good bending and torsional rigidity, but also leads toa weight saving and the possibility of the drive and/or control elementsbeing located inside of the mast, which is of advantage for theprotection of construction components and/or for aesthetic reasons.

For the implementation of the guide tracks, several possibilities exist.For example, the guide tracks can be open roller or slide tracks onwhich the guide elements are held by means of a cuff surrounding themast. Also, dovetail guides are possible. An especially preferredimplementation is that in which the guide tracks have guide grooveslying in the guide plane and perpendicular to the guide direction withthe grooves extending transversely to the guide tracks and beingdirected toward and/or away from another.

Also, for the hollow profile cross section of the mast, several profileshapes are possible, as for example, a round profile with flats at theguide tracks or a multi-cornered profile, in which case a preferredshape is a rectangular one on one side of which the guide tracks arearranged.

In its simplest form, the inner end of the carrier beam can directlycarry a guide element. Advantageously, however, an implementation ispreferred in which the guide elements are arranged on a guide carriagelinkedly connected with the inner end of the carrier beam so that thestability and guiding characteristics of the carrier beam on the mastare improved.

Several possibilities exist for the implementation of the drivemechanism. An especially simple construction is one in which the carrierbeam drive mechanism includes a circulating member located inside themast and drivable by a drive powered by a hand crank or motor, whichcirculating member at the end of the path of the guide elements is bentover direction changing members and through through openings on theouter side of the mast in the area of the guide tracks, thisconstruction weakening the cross section of the mast as little aspossible and on the other hand giving optimal protection to thecirculating member.

An especially advantageous construction of the standing umbrella is onein which the mast is arranged to incline rearwardly so that the centerof gravity of the closed umbrella lies above the anchoring region of themast in the earth. This results in the advantage that the tipping momentof the standing umbrella in the closed condition of the umbrella is assmall as possible. Moreover, the lying of the closed umbrella againstthe mast supports the closed umbrella and thereby inhibits falling ofthe umbrella from the mast. The inclined position of the mast alsoimproves the appearance of the standing umbrella in its closed conditionas well as in its open condition and conceals a possible bending of themast when the umbrella is open.

The umbrella drive mechanism can be equipped with a suitable drive, forexample, a suitable hand crank or a suitable motor; however, anadvantageous inventive construction is that in which the carrier beamdrive mechanism and the umbrella drive mechanism for opening and closingthe umbrella are so combined that they are simultaneously operable incommon.

A practical implementation of the carrier beam drive mechanism is onehaving a circulating member drivable through a drive by means of a handcrank or motor which circulating member is connected with the inner endof the carrier beam and at the end of the shifting path of the carrieris guided over direction changing members such as direction changingrolls, and is preferably one in which the carrier beam drive mechanismhas a spindle preferably provided with a self-arresting thread on whichspindle is arranged a threaded nut connected with the circulatingmember. By means of the spindle, the necessary drive force can beoptimally set according to the pitch of the thread and/or on the otherhand a self checking by the thread is obtained so that brakes and thelike are not required.

Various different possibilities exist as to the construction of theumbrella drive mechanism. An especially advantageous construction is onein which the umbrella drive mechanism for opening and closing theumbrella includes a tension member guided over the upper end of themast, over the connecting strut and a joint into the carrier beam, tothe outer end of the carrier beam and through the umbrella stick to aterminating member for the lower ends of the support struts, to whichterminating member the tension member is connected, the support strutsbeing linkedly connected to roof rods which in turn are linkedlyconnected with a crown arranged on the umbrella stick. This constructionon one hand makes possible an optically non-disturbing guide for thetension member and on the other hand protects the tension member againstdamage. Further, the tension member can be directly coupled with thecirculating member or can be indirectly coupled with the circulatingmember in that it, for example, is connected to a common drive memberfor the circulating member and for the tension member.

A preferred development of the standing umbrella is that the tensionmember is provided with a mechanism operable during opening of theumbrella for releasably arresting the tension member and uncoupling itfrom the circulating member, this making it possible to adjust thecarrier beam with the umbrella in opened condition in order to changethe position of the umbrella, for example, to suit changes in theposition of the sun. An advantageous implementation of the mechanism forreleasably arresting the tension member is one wherein the tensionmember is connected with the circulating member by a stop which couplesonly in the opening direction and which stop on its end facing away fromthe umbrella has an arresting member cooperable with an inwardly movablebolt associated with the mast.

Especially advantageous is a refinement wherein the tension member isguided over a compensating mechanism to compensate for tension changesin the tension member resulting from changes in the length along whichthe tension member passes around direction changing rolls at differentangular positions of the carrier beam, this improving the opening andspreading of the umbrella. An especially simple implementation of thecompensating mechanism is one in which the compensating mechanismincludes a direction changing roll for the tension member arranged onthe pivot axis for the connecting strut with two assisting rollsassociated with the direction changing roll, the first of whichassisting rolls is on the mast side and the second of which assistingrolls is on the connecting strut with the assisting rolls being soarranged that the tension member passes over the first assisting rolland from there under the direction changing roll and then over thesecond assisting roll which guides it to the connecting strut.

Various possibilities exist in connection with the pivotal arranging andarresting of the umbrella on the outer end of the carrier beam. Anespecially simple solution for this is to have the carrier beam have itspivot axis displaced downwardly from the carrier beam axis, whichdisplaced pivot axis is pivotally connected to the umbrella above thecrown, the umbrella stick being elongated upwardly to the region of theaxis of the carrier beam and there carrying a direction changing rollfor the tension member.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the standing umbrella of the invention aredescribed in more detail hereinafter in connection with the drawings,which show:

FIG. 1 - A standing umbrella embodying the invention in openedcondition, in side view and with some portions shown broken away.

FIG. 2 - The standing umbrella of FIG. 1 in closed condition and withthe roof layer removed, in side view and partially broken away.

FIG. 3 - A portion of the mast of the standing umbrella in longitudinalsection and in enlarged scale.

FIG. 4 - The mast of FIG. 3 in a section taken on line IV-IV of FIG. 3.

FIG. 5 - The hollow profile of the mast in detail.

FIG. 6 - The area in which the connecting strut is connected to thecarrier beam, partially broken away and in enlarged scale.

FIG. 7 - The umbrella which is arranged on the carrier beam, infragmentary view, partially broken away and in enlarged scale.

FIG. 8 - The mast of a standing umbrella comprising a further embodimentof the invention in fragmentary view and in longitudinal section.

FIG. 9 - An arresting mechanism in sectional view taken on the lineIX-IX of FIG. 8.

FIG. 10 - An alternative hollow profile for the mast of the standingumbrella of the invention.

FIG. 11 - Another alternative hollow profile for the mast of thestanding umbrella of the invention.

FIG. 12 - A still further alternative hollow profile for the mast of thestanding umbrella of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The standing umbrella, shown in its entirety in FIGS. 1 and 2 and indetail in FIGS. 3-7, has a stand (2) including a mast (6) anchorableeither directly or indirectly into the ground (4). The mast ispreferably arranged so as to be inclined rearwardly about 7° so that thecenter of gravity of the closed standing umbrella, as seen in FIG. 2, islocated over the anchoring position of the mast in the ground. The innerend (8) of a carrier beam (10) is supported against the mast (6) and theouter end (12) of the beam carries an umbrella (14). A connecting strut(18) is linkedly connected between the carrier beam (10) and the upperend (16) of the mast (6). A carrier beam drive mechanism (20) arrangedin the mast (16) is connected with a guide element (22) on the inner end(8) of the carrier beam (10), to shift the inner end of the carrier beamback and forth along the length of the mast, in order to move thecarrier beam between a deployed position shown on one hand in FIG. 1 anda withdrawn position shown on the other hand in FIG. 2 and to desiredintermediate positions. These movements, as well as the opening andclosing of the umbrella, are possible without being hindered by tablesand chairs.

The standing umbrella also includes an umbrella drive mechanism (24)having a tension member (26) whose inner end (28) is located inside ofthe mast (6). From there, the tension member (26) runs over a directionchanging member (30) at the upper end of the mast: (6) into and throughthe connecting strut (18) (FIG. 3), from there over a direction changingmember (32) at the joint (34) between the connecting strut (18) and thecarrier beam (10) (FIG. 6) and lastly into and through the carrier beam(10) to the forward end of the same. A further direction changing means(36) guides the tension member (26) through the interior of a hollowumbrella stick (38) to a spine (40) located below the umbrella stick(38), as best seen in FIG. 7. The spine (40) carries a rosette (42) towhich the support struts (44) are pivotally connected, the supportstruts being in turn pivotally connected with roof rods (46), the roofrods at their inner ends being pivotally connected to a crown (48)fastened to the upper portion of the umbrella stick (38). The roof rods(46) carry a roof layer (50) of the umbrella. The umbrella stick (38)above the crown (48) is pivotally supported for movement relative to thecarrier beam (10) about an eccentrically arranged pivot axis (52), sothat the umbrella stick is lengthened by approximately the eccentricitye of the pivot axis (52) from the axis (54) of the carrier beam, and theumbrella stick at its upper end carries a direction changing roll (56)over which the tension member (26) is guided. The carrier beam (10)itself likewise carries a direction changing roll (58) over which thetension member (26) runs. The two direction changing rolls (56,58)together form the above-mentioned direction changing means (36). Whenthe tension member is loose, the umbrella takes on the collapsedcondition shown in FIG. 2. Upon drawing in of the tension member (26),the spine (40) moves against the lower end of the umbrella stick (38)and becomes fixed there so that the support struts (44) spread the roofrods (46) into the opened condition of the umbrella, and at the sametime the umbrella stick is pivoted about the pivot axis (52) until theupper end of the umbrella stick (38) engages the carrier beam (10) andis held there by a tension in the tension member. The position of theumbrella (14) relative to the stand (2) can be adjusted by means of anadjusting screw (60).

FIGS. 3-5 show in detail the hollow profile of the mast (6) as well asthe support and drive of the inner end (8) of the carrier beam (10) onthe mast (6). The mast (6) has a closed hollow profile (62) with arectangular cross-section. On one side of the hollow profile are twoguide tracks (64,66) arranged at a spacing d from one another, in whichtracks the associated guide elements (22) are received. Each guide track(64,66) contains in the guide plane and arranged perpendicular to theguide direction guide grooves (64a, 64b and 66a, 66b, respectively)which respectively are located opposite to one another. The guideelements in this case consist of guide rollers (68a, 68b and 70a, 70b,respectively) arranged so as to lie behind one another in the guidetracks (64,66) and supported on a guide carriage (72) having two cheeks(74,76) between which the inner end of the carrier beam (10) ispivotally connected by a bolt (78). The guide carriage (72) has a firstfoot portion (80a) for receiving the guide rolls (68a and 70a) and asecond foot portion (80b) for receiving the other guide rolls (68b and70b), the foot portions (80a, 80b) being connected with one another byan adjusting screw (82) which serves to tighten the later to bedescribed circulating member (84) of the carrier beam drive mechanism(20).

The carrier beam drive mechanism (20) includes the already mentionedcirculating member (84) which with its outer ends (86a, 86b) is attachedto the foot portions (80a, 80b) of the guide carriage (72). Thecirculating member (84), which for example in the illustrated case is acirculating cable, is guided in a guide track (66) along the length ofthe mast and extends over an upper direction changing roll (88) andthrough a through opening (90) of the mast (6). At the lower end, achange in direction takes place analogously by means of a directionchanging roll (92) and a further through opening (94) in the crosssection of the mast. The inner ends (86a, 86b) of the circulating member(84) are fixed to a threaded nut (98) arranged on a spindle (100). Thespindle is driven by an electric motor (104) and associated drive (102)through a brake mechanism (101), such as for example a centrifugalaction brake not illustrated in more detail. One such drive unit isdescribed in more detail in WO 92/14377. The thread of the spindle (100)and/or the drive (102) can also be so formed that they areself-retarding, so that a brake mechanism is not necessary. Instead ofor supplementary to the electric motor (104), the drive mechanism forthe carrier beam can also be equipped with a removable hand crank (106).

The umbrella drive mechanism (24) and the carrier beam drive mechanism(20) are combined with one another so that the actuation of the carrierbeam drive mechanism also actuates the umbrella drive mechanism (24),that is, upon the moving out of the carrier beam (10) the umbrella (14)is simultaneously opened and likewise upon the moving in of the carrierbeam (10) the umbrella (14) is simultaneously closed. The combination ofthe drives take place in such way that the inner end (28) of the tensionmember (26) is connected through a follower mechanism (108) with thethreaded nut (98), to which the circulating member (84) of the carrierbeam drive mechanism (20) is also connected.

FIG. 8 shows details of a carrier beam drive mechanism (20a) and of anumbrella drive mechanism (24a) of a further umbrella in fragmentary,broken away view, wherein features identical with those of the previousexemplary embodiment have been given the same reference numbers. Thecarrier beam drive mechanism (20a) again includes a circulating member(110) in the form of a chain which at the upper mast portion is guidedaround a direction changing roll (112) and through a through opening(114) on the outer side of the mast (6), and which is connected by meanof its ends (116a, 116b) to a guide carriage (72). A lower directionchanging roll (118) is formed as a sprocket wheel with built-in brakemechanism (119) and serves at the same time as a drive roll, which forexample is drivable by means of a hand crank (120). The circulatingmember (110) is also guided on a lower direction changing roll (118) andthrough a through opening (114).

A tension member (122) of the umbrella drive mechanism (24a) is directlycoupled with the circulating member (110) through a follower device(124). The umbrella drive mechanism (24a) further includes a releasablearresting mechanism (126), which permits an uncoupling of the tensionmember from the circulating member (110) when the umbrella is opened. Inconnection with this, the tension member (122) includes at its inner enda stop (128) which projects from the follower device (124) on the sidethereof facing away from the umbrella. The tension member itself isguided slidably in a bore (130) of the follower mechanism (124). Thestop is elongated downwardly and carries at its end facing away from theumbrella an arresting element (132) which is stoppingly engagable with alock bolt (133) arranged on the mast for inward movement. The bolt (133)consists of a plate containing elongated holes (134) arranged in theinterior of the mast (6) through which threaded bolts (135) extend whichhold the bolt and plate slidably on a carrier (136) of the mast (6). Thebolt includes a fork-like part (137), which in a pushed-in free positionof the bolt (133) frees the passage of the arresting element (132), andwhich in the pulled-out stop position shown in FIGS. 8 and 9 stops thearresting element. An inclined ramp surface (138) in the region of thefork-like part (137) of the bolt (133) serves to urge the bolt (133)rearwardly to the free position. The arresting element: (132) cantherefore during the opening of the umbrella move the bolt (133) fromthe stopping position to the free position by means of the ramp surface(138) and thereby free its passage to its arresting position. Anaccessible hand grip (139) on the outer side of the mast serves forshifting the bolt (133) and thereby for locking or freeing the arrestingelement (132). For arresting the opened umbrella, the bolt (133) istherefore brought to its arresting position on the mast and rearwardlygrips the arresting element (132) with its fork-like portion (137), sothat upon operation of the circulating member (110) by means of the handcrank (120) the stop (128) moves free of the follower mechanism (124)and the follower (124) slides by means of the bore (130) over thetension member (122). Thereby the inner end of the carrier beam can bemoved, without the umbrella being closed, so that the position of theumbrella can be changed, as for example to suit flat rays of sunshine.

The umbrella of FIGS. 8 and 9 is further equipped with a compensationdevice (140) for adjusting for changes in the tension and length of thetension member (122) as a result of changes in length of the portions ofit which pass over the direction changing rolls, especially thedirection changing roll (32) of the joint (34), in the case of differentangular positionings of the carrier beam (10). The compensation device(140) is made by a roller system arranged in the area of the jointconnecting the connecting strut (142) to the upper end of the mast (6)about a pivot axis (146). The pivot axis (146) carries a directionchanging roll (148) with which are associated assisting rolls (150,152).The first assisting roll (150) is arranged on the mast (6) and bends thetension member (122) toward the underside of the direction changing roll(148) so that this is engaged from the bottom by the tension member,with the second assisting roll (152) being arranged on the connectingstrut (142) and bending the tension member from the underside of thedirection changing roll (148) into the interior of the connecting strut.With this arrangement, the angle of engagement of the tension member(122) with the direction changing roll (148) becomes larger as thecarrier beam (10) is extended outwardly so that length changes of thetension member, which occur due to diminished engagement angles of thetension member with the other direction changing rolls are compensated.Upon inward movement of the carrier beam, the engagement of the tensionmember (122) with the direction changing roll (148) is diminished andthereby frees some length of the tension member which is needed becauseof the increased engagement of the tension member with the otherdirection changing rolls on the carrier beam. In the instant case, thediameter of the direction changing roll (148) is so chosen that theengagement length change is equally as large as the change of theengagement length on the direction changing roll (32) of the joint (34)by which the connecting strut (142) is connected to the carrier beam(10).

FIGS. 10-12 show alternative forms of the hollow cross section of themast (6). In FIG. 10, two guide tracks (154,156) of the mast (6a) areformed by two oppositely directed C-shaped profile portions, which haveoppositely directed grooves (162,164) for receiving a guide element(166) of a carrier beam. In FIG. 11, the mast (6b) has two outwardlylying guide tracks (168,170) which form guide grooves (172,174) pointingin opposite directions from one another, and in which grooves guideelements (176,178) of the inner end of the carrier beam extend fromoutside. The mast (6c) of FIG. 12 is octagonally formed and has ondiametrically opposite sides channel shaped guide tracks (180,182) inwhich are received guide elements (184,186) which are connected with oneanother by a cuff shaped ring (188) surrounding the mast (6c).

There are still other numerous exemplary embodiments which are possible,and especially the elements of the foregoing exemplary embodiments areexchangeable with one another and are capable of being furtherdeveloped.

I claim:
 1. A standing umbrella comprising:a stand (2) having a mast(6,6a,6b,6c) with an upper end (16), a carrier beam (10) having an innerend (8) and an outer end (12), with said inner end (8) of said carrierbeam being guided on said mast for outward and inward movement of saidcarrier beam relative to said mast, an umbrella stick (38) of acollapsible umbrella (14) carried on said outer end (12) of said carrierbeam, a connecting strut (18,142) linkedly connected between said upperend (16) of the mast (6,6a,6b,6c) and said carrier beam (10), a drivemechanism (20,20a,24,24a) shifting said carrier beam (10) relative tosaid mast in a shifting direction as well as opening and closing saidumbrella (14), said mast (6,6a,6b,6c) having two guide tracks(64,66,154,156,168,170,180,182) spaced from one another, and guideelements (22,166,176,178,184,186) on said inner end of said carrier beamin cooperation with said two guide tracks, said guide tracks being soprofiled that said guide elements (22,166,176,178,184,186) are held bythe shape of said tracks transversely to said shifting direction.
 2. Astanding umbrella according to claim 1, wherein:said mast (6,6a,6b,6c)has a closed hollow cross section.
 3. A standing umbrella according toclaim 2, wherein:said guide elements(22,68a,68b,70a,70b,166,176,178,184,186) are supported on a guidecarriage (72) which guide carriage is linkedly connected with said innerend (8) of said carrier beam (10).
 4. A standing umbrella according toclaim 2, wherein:said carrier beam drive mechanism (20,20a) includes acirculating member (84,110) located inside the mast (6) and drivablethrough a drive (92,100,102) by means of a hand crank (106,120) or amotor (104), which circulating member at the ends of the shifting pathof the guide elements (22,68a,68b,70a,70b,166,176) is bent overdirection changing members (88,92,112,118), and through openings(90,94,114) in the mast located on the outer side of the mast (6) in thearea of the guide tracks (64,66,154,156,168,170).
 5. A standing umbrellaaccording to claim 1, wherein:said guide tracks (64,66,154,156,168,170)have guide grooves (64a,64b,66a,66b,162,164,172,174) lying in a guideplane parallel to said mast and extending perpendicular to said shiftingdirection, said guide grooves in the direction transversely to saidguide tracks being located opposite to one another.
 6. A standingumbrella according to claim 1, wherein:said mast (6,6a,6b) has arectangular profile, on one side of which profile said guide tracks(64,66,154,156) are formed.
 7. A standing umbrella according to claim 1,wherein:said mast has a lower end portion defining an anchoring regionof the mast for holding the mast in place when in use, and said mast(6,6a,6b,6c) is arranged to incline rearwardly when in use, so that thecenter of gravity of the closed umbrella lies above the anchoring regionof the mast.
 8. A standing umbrella according to claim 1, wherein:saiddrive mechanism (20,20a) includes a first drive mechanism to shift theinner end (8) of the carrier beam and a second drive mechanism to openand close the umbrella (14), said first and second drive mechanismsbeing combined with one another so that they are simultaneously operablein common.
 9. A standing umbrella according to claim 8, wherein:saidcarrier beam drive mechanism (20,20a) has a circulating member (84,110)drivable through a drive (92,100,102), said circulating member isconnected with the inner end (8) of the carrier beam (10) and at theends of the shifting path of the carrier beam (10) is guided overdirection changing members (88,92,112,118).
 10. A standing umbrellaaccording to claim 9, wherein:said carrier beam drive mechanism (20) hasa spindle (100) provided with a self-arresting thread on which spindleis arranged a threaded nut (98) connected with the circulating member(84).
 11. A standing umbrella according to claim 8, wherein:saidumbrella drive mechanism (24,24a) for opening and closing the umbrella(14) includes a tension member (26,122) guided over the upper end (16)of the mast (6), and further over said connecting strut (18,142) and ajoint (34) into the carrier beam (10) to extend to the outer end (12) ofthe carrier beam (10) and through the umbrella stick (38) to beconnected to a terminating member (40,42) secured to the lower ends ofsupport struts (44), said support struts (44) being linkedly connectedto roof rods (46) which in turn are linkedly connected with a crown (48)attached to the top portion of the umbrella stick (38).
 12. A standingumbrella according to claim 11, wherein:said tension member (26,122) iscoupled with the circulating member (84,110).
 13. A standing umbrellaaccording to claim 12, wherein:said tension member (122) is guided overa compensating mechanism (140) to compensate for tension changes in thetension member (122) resulting from changes in the lengths at differentangular positions of the carrier beam (10).
 14. A standing umbrellaaccording to claim 13, wherein:said compensating mechanism (140)includes a direction changing roll (148) mounted on the upper end of themast in the area of the joint connecting the connecting strut to theupper end of the mast, associated with said direction changing roll(148) is a first assisting roll (150) on the mast and a second assistingroll (152) on the connecting strut (142) so arranged that the tensionmember (122) passes over the first assisting roll (150), then goes underthe direction changing roll (148) and then over the second assistingroll (152) to the connecting strut (142).
 15. A standing umbrellaaccording to claim 11, wherein:said tension member (122) includes amechanism (126) operable during opening of the umbrella (14) releasablyarresting the tension member (122) and uncoupling it from thecirculating member (110).
 16. A standing umbrella according to claim 15,wherein:said tension member (122) is connected with the circulatingmember (110) by a stop (128) which couples only in the opening directionand has an arresting member at its end facing away from the umbrella(14), said arresting member cooperates with an inwardly movable bolt(133) on the mast (6).
 17. A standing umbrella according to claim 8,wherein:said carrier beam has a longitudinal axis (54), and saidumbrella stick has a pivot axis (52) displaced downwardly from saidcarrier beam longitudinal axis (54), said pivot axis (52) is pivotallyconnected to the umbrella (14) above the crown (48), the umbrella stick(38) extending upwardly to the region of the longitudinal axis (54) ofthe carrier beam (10) and carrying a direction changing roll (56) forthe tension member (26).